Roofing



w. BLANTON.

ROOFING.

APPHCATION FILED APR.30 1919.

1,341,254. Patented May 25,1920.

2 SHEETS-*SHEET l- WITNESSES INVENTOR Rflffilanion, g ms 1m, flaw 2&5.

A TTOR/VEYS WITNESSES J WOW/44m R. W. BLANTO N.

ROOFING.

APPLlCATION FILED APFLSIL I919.

Patented May 25,1920.

2 SHEETS-SHEET Z- A TTOHNEYS PATENT OFFICE.

ROBERT W. BLANTON. 0F IRONTON, OHIO.

ROOFING.

Application filed April 30,

To all whom it may concern Be it known that I, Ronnnr W. BLAN'roN, a citizen of' the United States, and a resident of Ironton, in the county of Lawrence and State of Ohio, have made certain new and useful Improvements in Roofing. of which the following is a specification.

My invention relates to improvements in sheet metal roofing, and it consists in the construction, manner of combination and arrangement herein described and claimed.

The foremost object of my invention is to provide lock-joint metal roofing sheets of such formation that not only can sue cessive sheets of one course be interlocked, but successive courses can be lapped over each other, the lock-joints of one course coming substantially in the middle of the sheets of the course below, thereby stagger-- ing the lock-joints and forming what is known in the art as a break'joint construction.

A further object of the invention is to provide metal roofing sheets including minor and major ridges, so inclined with respect to each other as to tend to deflect wind and rain from the valley between them and thus in a large measure prevent the accumulation of foreign material in said valley.

A further object of the invention is to provide metal roofing sheets, the lock joints of which will not become separated by expansion and contraction under the influence of heat and cold.

Other objects and advantages will" appear in the following specification, reference being had to the accompanying drawings in which: i

Figure 1 is a perspective view of a portion of a roof covered with "the improved roofing sheets, clearly showing the break joint feature between the first and second courses.

Fig. 2 is a section on the line 2-2 of Fig 1, and

g. 3 is a detail perspective view of a portion'of one of'the sheets; Attention is first directed to Fi 3, which shows in perspective, the lower e ge of one Specification of Letters Patent.

Patented May 25, 1920.

1919. Serial No. 293,651.

Disposed adjacently to the major ridge 2 is a lock ridge 5, which, when two sheets are locked together,'occup1es a'channel cor responding to the channel 6 of the lock joint 7. The lock joint 7 in Fig. 3 consists of the lock hook 8 which comprises a part of the adjacent minor ridge 9, that is simply bent over upon itself to form the lock hook and at the same time provide the channel 6 for the reception of the lock ridge 5 of a companion sheet, when such sheets are locked together as just stated.

A minor ridge 10 is disposed adjacent to the central major ridge 3 as clearly shown in the drawings. It is to be observed that the outside walls 11 and 12 of the minor and major ridges respectively, are in all cases disposed at substantially the same inward inclination. The purpose of this arrangement will become more apparent in the description following, but briefly referring to Fig. 2, the arrow a indicates how rain driven by the wind and striking one of the ridges, is deflected upwardly and across so that there is a tendency to throw off the water rather than let it collect in the val- .ley between the ridges.

Each major ridge includes a substantially vertical wall 13 which is approximately at right angles with the roof 14 when the sheets are applied. It is to be observed that all of the corners of the various parts of the ridges and. lock-j oints are rather fully rounded. Especial attention is given the formation of the ridges and lock-joints in this respect, so that there is no place where the metal is stretched excessively. Consequently the original strength of the metal is retained in a large measure.

If it becomes necessary to cut one of the sheets longitudinally in order to make a half sheet to complete one side of a course, the minor ridge 10 in the longitudinal center of the sheet is cut along the top, so that when severed there is thejequivalent of a lock ridge 5 which is used to interlock with an adjacent sheet if the course happens .to run out that way.

In applying the roofing the bottom course is laid first. This is represented by A in Fig. 1. The operator preferably starts from the left and works toward the right.

The sheet 1 is laid and nailed down along the selvage edge 15 by nails or other fastening means 16, as indicated at the selvage edge of the second sheet inthe first course in Fig. 1. All that is necessary to do in applying successive sheets, is simply to fit the lock ridge 5 of the sheet to the lockjoint 7 of that sheet already laid, move the loose sheet down until it lays flat on the .roof, whereupon it too is nailed as explained above.

In laying the second course B, the lockjoints of the sheets in that course come over the central dummy ridges 3 and 10, and not over the lock-joints of the sheets in the course below. In order to distinguish the staggered arrangement of the lock-joints,

- they are indicated L in Fig. 1.

So far as my knowledge goes, the feature of lapping the roofing plates so that the lockjoints of the sheets of the various courses come in sta gered relationship, has never been success 'lly embodied in sheet metal roofin'g. It must be understood in the first place, that in practice it is necessary to lap the sheets in the manner described. This is for the reason that roofing sheets are ordinarily made inlengths no longer than twelvefeet, and in instances where the roofing is applied directly to the rafters, piecing of the roofing becomes necessary because sometimes the rafters are as much as sixteen feet apart. Summing up the various important features, they consist generally of the following: The saw tooth shape of the ridges, the ability to break the lock-j oints, that is to say, arrange them in staggered formation, the flat contact of the roofing ,with the roof boards, absence of sharp bends in the middle, the resiliency of the parts whereby the lockjoint can give to the necessary extent in locking a plate in position and the important feature of deflecting wind and water from the valley between the ridges.

I While the construction and arrangement of the roofing sheet as herein described and claimed is that of a generall preferred form, obviously modifications an changes can be made without departing from the spirit of the invention or the scope of the claims.

- I claim:

1. A roofing sheet, having a ridge parallel with one edge which is a lock ridge, another ridgeparallel with the other edge, the part of the plate outside of this latter ridge serving as a nailing flange, and a longitudinal lock channel inside of and adjacent to this.

latter ridge opening downwardly and having an overhanging wall to receive a lock ridge, corresponding to the above, as of a next sheet when applied.

2.. A roofing sheet, including a lock ridge at one side and a lock-joint at the opposite side, and a central strengthening ridge structure, including a ridge portion adapted to be cut longitudinally to form another look ridge in condensing the width of the sheet.

3. Instrume'ntalities embodied in a roofing sheet enabling condensing the width without destroying the locking structure in laying a horizontal course; comprising a sheet with a lock and majorridge on one edge, a minor and major ridge in the center, and a lock-joint at the opposite edge, said central minor ridge being adapted to be cut longitudinally to form another look ridge and enabling discarding that portion of the sheet having the first lock and major. ridge.

4. A roofing sheet, having a ridge parallel with one edge, which is formed into an upwardly directed lock ridge; another ridge parallel with the other edge, and a longitudinal lock joint including a minor ridge doubled over to form a downwardly directed opening closely occupied by an upstanding lock ridge of the next sheet when applied. 7

5. Sheet metal roofing, comprising a plurality of courses of sheets, each sheet including locking means along one edge, a receiving lock joint along the other edge, a longitudinal central ridge structure generally corresponding in shape to the lock joint, the lock joint and lock means of each pair of sheets. of one course fitting over the central ridge structure of a sheet in the cours'ebelow, enabling overlapping of the courses and breaking or staggering of the joints.

6. A roofing sheet, including a plurality of major ridges of substantially identical shape to deflect water from the adjacent valley when blown'thereagainst, a lock rid e adjacent one major ridge, a minor ridge a jacent the second major ridge, adapted to .be cut to form a lock ridge should it be necessary to reduce the width of the sheet; and -a lock-joint adjacent the other major tical and inclined walls, another similarly inside of and adjacent to the latter ridge, in- I cluding minor ridge walls bent up, flattened, then over together to form a downwardly directed opening.

8. A roofing sheet, including a lock. ridge with an adjacent major ridge along one lon gitudinal edge, a central major rldge with an adjacent minor ridge adapted to be cut longitudinally to form a lock ridge, a lockjoint structure near the other lon itudinal edge, including a major ridge wit an adj acent minor rldge and lock hook bent over into the valley and forming a channel to re ceive the lock ridge of a companion sheet; and a selvage naillng edge along said longitudinal edge adjacent the last named major ridge.

' ROBERT W BLANTON. 

